Definition of mossy rose gall in English:

mossy rose gall

Syllabification: moss·y rose gall

noun

A reddish mosslike growth on rose bushes that forms in response to the developing larvae of a gall wasp. Also called bedeguar.
  • The wasp is Diplolepis rosae, family Cynipidae

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal